prefer repo.grails.org over mavenCentral
enable snapshot publishing without signing
verify that versions of subprojects conform to the release type
set grails-datastore-gorm-mongodb version to 3.0.3.BUILD-SNAPSHOT
use snapshot version for grails-datastore-rest-client
Add snapshot publishing to Travis build
Publish snapshots only for non-PRs in main repository
Merge branch '3.x'

Conflicts:
	build.gradle
remove custom sub-project version numbers in master branch